I also tried changing the zigbee channel to 25 (as suggested on reddit for this issue). All of my lights blink to acknowledge the change. But the one problematic light still turns back on whenever I try to turn it off.

• This is happening in the US — standard 110 volt sockets. (I’ve read where some people believe it’s the 220 current in Europe and other places causing the problem)

• When the problem light is a color and I turn it off, it comes back on right away “normal” light color, as the 3G colored lights do when powered off then on again via the socket as opposed to the app. Also it comes on bright white right away — no fade — so it seems as though the bulb is acting as if it’s physical switch was toggled.